wget -c http://nginx.org/download/nginx-1.16.1.tar.gz
wget -c http://nginx.org/download/nginx-1.16.1.tar.gz.asc
sudo gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 520A9993A1C052F8
gpg --verify nginx-1.16.1.tar.gz.asc

# gpg: Can't check signature: No public key
# WARNING: This key is not certified with a trusted signature!
